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5.
Parts of the Circulatory System
• Divided into three major parts:
– The Heart
– The Blood
– The Blood Vessels

6.
The heart, the lungs, and the
blood vessels work together to
form the circle part of the
circulatory system.

7.
Circulation
• Two parts
• Heart acts as double pump
• Blood from the right side pump is dark red
and low in oxygen (oxygen-poor)

8.
Circulation
• Travels through pulmonary arteries to
lungs where it gets fresh oxygen and
becomes bright red
• Blood from lungs through pulmonary veins
back to the heart's left side pump
• Pumped out into the body

29.
Veins
• Carry blood to the heart
• Receive blood from the capillaries
• Transport waste-rich/ oxygen-poor blood
back to the lungs and heart
• Valves are located inside the veins
• Allow blood to move in one direction

33.
Close up of heart valve
Heart sounds are made by the valves
as they open and close
http://hes.ucf.k12.pa.us/gclaypo/circdia.html

34.
Blood
• Pumped by your heart.
• Travels through thousands of miles of
blood vessels
• Carries nutrients, water, oxygen and
waste products to and from your body
cells.
• Made up of liquids, solids and small
amounts of oxygen and carbon dioxide.

35.
Blood
• Red blood cells carry oxygen from the
lungs to all the cells of the body.
• Takes carbon dioxide and transports it
back to the lungs
• About 5,000,000 Red Blood Cells in ONE
drop of blood.